Battery-operated adjustable desk lamp



FIG. 1 is a top, front, right hand side perspective view of a battery operated adjustable desk lamp showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left hand side elevation view thereof;

FIG. 5 is a right hand side elevation view thereof.

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a battery operated adjustable desk lamp, as shown. 